BRPI0418534A - processo e aparelho para recuperação de portadora em um sistema de comunicações - Google Patents

processo e aparelho para recuperação de portadora em um sistema de comunicações

Info

Publication number
BRPI0418534A
BRPI0418534A BRPI0418534-0A BRPI0418534A BRPI0418534A BR PI0418534 A BRPI0418534 A BR PI0418534A BR PI0418534 A BRPI0418534 A BR PI0418534A BR PI0418534 A BRPI0418534 A BR PI0418534A
Authority
BR
Brazil
Prior art keywords
signal
carrier
carrier recovery
communications system
layered modulation
Prior art date
Application number
BRPI0418534-0A
Other languages
English (en)
Inventor
Joshua Koslov
Original Assignee
Thomson Licensing
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Licensing filed Critical Thomson Licensing
Publication of BRPI0418534A publication Critical patent/BRPI0418534A/pt
Publication of BRPI0418534B1 publication Critical patent/BRPI0418534B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3488—Multiresolution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0046—Open loops

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Relay Systems (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PROCESSO E APARELHO PARA RECUPERAçãO DE PORTADORA EM UM SISTEMA DE COMUNICAçõES Um sistema de comunicações por satélite compreende um transmissor, um transponder de satélite e um receptor. O transmissor transmite um sinal modulação em camadas de ligação superior, tendo uma camada superior e uma camada inferior, para o transponder de satélite,que difunde o sinal de modulação em camadas por ligação inferior para um ou mais receptores. O receptor recebe o sinal de modulação em camadas (o sinal recebido) e executa a demodulação e decodificação do componente de sinal da camada inferior dele, por uso de uma portadora recuperada para promover contra-rotação do sinal recebido, em que a portadora recebida é desenvolvida por um processo de recuperação de portadora, acionado por decisões programáveis com relação ao componente de sinal da camada superior do sinal recebido
BRPI0418534-0A 2004-02-19 2004-02-19 Processo e aparelho para recuperação de portadora em um sistema de comunicações BRPI0418534B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2004/004702 WO2005086444A1 (en) 2004-02-19 2004-02-19 Method and apparatus for carrier recovery in a communications system

Publications (2)

Publication Number Publication Date
BRPI0418534A true BRPI0418534A (pt) 2007-05-22
BRPI0418534B1 BRPI0418534B1 (pt) 2018-02-06

Family

ID=34920936

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0418534-0A BRPI0418534B1 (pt) 2004-02-19 2004-02-19 Processo e aparelho para recuperação de portadora em um sistema de comunicações

Country Status (10)

Country Link
US (1) US20080212708A1 (pt)
EP (1) EP1716682B1 (pt)
JP (1) JP4567008B2 (pt)
KR (1) KR101028271B1 (pt)
CN (1) CN1918873B (pt)
BR (1) BRPI0418534B1 (pt)
DE (1) DE602004011577T2 (pt)
ES (1) ES2300748T3 (pt)
MY (1) MY138597A (pt)
WO (1) WO2005086444A1 (pt)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7184489B2 (en) 2001-04-27 2007-02-27 The Directv Group, Inc. Optimization technique for layered modulation
US7209524B2 (en) 2001-04-27 2007-04-24 The Directv Group, Inc. Layered modulation for digital signals
US7583728B2 (en) 2002-10-25 2009-09-01 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7471735B2 (en) 2001-04-27 2008-12-30 The Directv Group, Inc. Maximizing power and spectral efficiencies for layered and conventional modulations
US7512189B2 (en) 2001-04-27 2009-03-31 The Directv Group, Inc. Lower complexity layered modulation signal processor
US7502430B2 (en) 2001-04-27 2009-03-10 The Directv Group, Inc. Coherent averaging for measuring traveling wave tube amplifier nonlinearity
US7184473B2 (en) 2001-04-27 2007-02-27 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7173981B1 (en) 2001-04-27 2007-02-06 The Directv Group, Inc. Dual layer signal processing in a layered modulation digital signal system
US7483505B2 (en) 2001-04-27 2009-01-27 The Directv Group, Inc. Unblind equalizer architecture for digital communication systems
US7423987B2 (en) 2001-04-27 2008-09-09 The Directv Group, Inc. Feeder link configurations to support layered modulation for digital signals
US7151807B2 (en) 2001-04-27 2006-12-19 The Directv Group, Inc. Fast acquisition of timing and carrier frequency from received signal
US7639759B2 (en) 2001-04-27 2009-12-29 The Directv Group, Inc. Carrier to noise ratio estimations from a received signal
US7245671B1 (en) 2001-04-27 2007-07-17 The Directv Group, Inc. Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers
EP1540909A4 (en) 2002-07-01 2007-10-17 Directv Group Inc IMPROVING HIERARCHICAL 8PSK PERFORMANCE
US7529312B2 (en) 2002-10-25 2009-05-05 The Directv Group, Inc. Layered modulation for terrestrial ATSC applications
AU2003284297A1 (en) * 2002-10-25 2004-05-25 The Directv Group, Inc. Feeder link configurations to support layered modulation
US7463676B2 (en) 2002-10-25 2008-12-09 The Directv Group, Inc. On-line phase noise measurement for layered modulation
US7230480B2 (en) 2002-10-25 2007-06-12 The Directv Group, Inc. Estimating the operating point on a non-linear traveling wave tube amplifier
US7474710B2 (en) 2002-10-25 2009-01-06 The Directv Group, Inc. Amplitude and phase matching for layered modulation reception
US7502429B2 (en) 2003-10-10 2009-03-10 The Directv Group, Inc. Equalization for traveling wave tube amplifier nonlinearity measurements
WO2005086444A1 (en) 2004-02-19 2005-09-15 Thomson Licensing Method and apparatus for carrier recovery in a communications system
US8144800B2 (en) * 2004-09-18 2012-03-27 Broadcom Corporatino Downstream transmitter and cable modem receiver for 1024 QAM
KR100883348B1 (ko) 2006-11-09 2009-02-11 한국전자통신연구원 계층변조 기반 수신 시스템에서의 채널 추정 장치 및 그방법
US7856067B2 (en) * 2007-04-04 2010-12-21 The Aerospace Corporation Unequal hierarchical communications modulation method
US7974369B2 (en) * 2009-10-30 2011-07-05 Lsi Corporation Phase detector for timing recovery loop
US8855254B2 (en) * 2010-03-05 2014-10-07 The Aerospace Corporation Systems and methods for pre-averaged staggered convolution decimating filters
US8489662B2 (en) * 2010-03-05 2013-07-16 The Aerospace Corporation Systems and methods for sliding convolution interpolating filters
US9686062B2 (en) * 2011-03-04 2017-06-20 Alcatel Lucent Virtual aggregation of fragmented wireless spectrum
US9496982B2 (en) 2011-03-04 2016-11-15 Alcatel Lucent System and method providing resilient data transmission via spectral fragments
JP6526415B2 (ja) * 2011-10-27 2019-06-05 インテル・コーポレーション ベクトル・プロセッサおよび方法
CN102420790A (zh) * 2011-11-28 2012-04-18 清华大学 一种单载波超宽带通信系统中的均衡处理方法和系统
CN111277830B (zh) * 2018-12-05 2022-09-23 华为技术有限公司 一种编码方法、解码方法及装置
CN112583571B (zh) 2019-09-30 2024-07-23 深圳市中兴微电子技术有限公司 一种信号的采样方法及装置
US12431968B2 (en) * 2023-04-04 2025-09-30 T-Mobile Innovations Llc Diversity gain for space mobile systems

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9511551D0 (en) * 1995-06-07 1995-08-02 Discovision Ass Signal processing system
US5889821A (en) * 1997-02-28 1999-03-30 Comsat Corporation Low noise front-end blanking and interleaving for satellite reception in pulsed interference environments
US5966412A (en) * 1997-06-30 1999-10-12 Thomson Consumer Electronics, Inc. Apparatus and method for processing a Quadrature Amplitude Modulated (QAM) signal
EP1234420A2 (en) * 1999-12-03 2002-08-28 Broadcom Corporation Viterbi slicer for turbo codes
US20020131528A1 (en) * 2001-01-10 2002-09-19 Hughes Electronics System and method of parallel partitioning a satellite communications modem
US7209524B2 (en) * 2001-04-27 2007-04-24 The Directv Group, Inc. Layered modulation for digital signals
US7173981B1 (en) * 2001-04-27 2007-02-06 The Directv Group, Inc. Dual layer signal processing in a layered modulation digital signal system
EP1313279A1 (en) * 2001-11-14 2003-05-21 Alcatel Method for compensating phase impairments in a signal and corresponding receiver
US20030123595A1 (en) * 2001-12-04 2003-07-03 Linsky Stuart T. Multi-pass phase tracking loop with rewind of future waveform in digital communication systems
JP3946087B2 (ja) * 2002-05-23 2007-07-18 三菱電機株式会社 通信システム、受信機および通信方法
WO2004006455A1 (en) * 2002-07-03 2004-01-15 The Directv Group, Inc. Method and apparatus for layered modulation
CN100512244C (zh) * 2003-05-05 2009-07-08 汤姆森许可贸易公司 在迭代解码中使用的设备和方法
WO2004105302A1 (en) * 2003-05-16 2004-12-02 Thomson Licensing S.A. A unified receiver for layered and hierarchical modulation systems
US7228489B1 (en) * 2003-12-26 2007-06-05 Storage Technology Corporation Soft viterbi Reed-Solomon decoder
WO2005086444A1 (en) 2004-02-19 2005-09-15 Thomson Licensing Method and apparatus for carrier recovery in a communications system

Also Published As

Publication number Publication date
JP4567008B2 (ja) 2010-10-20
CN1918873B (zh) 2010-11-03
KR20070005598A (ko) 2007-01-10
CN1918873A (zh) 2007-02-21
KR101028271B1 (ko) 2011-04-11
BRPI0418534B1 (pt) 2018-02-06
JP2007527168A (ja) 2007-09-20
MY138597A (en) 2009-07-31
DE602004011577T2 (de) 2009-01-29
WO2005086444A1 (en) 2005-09-15
EP1716682B1 (en) 2008-01-23
ES2300748T3 (es) 2008-06-16
US20080212708A1 (en) 2008-09-04
DE602004011577D1 (de) 2008-03-13
EP1716682A1 (en) 2006-11-02

Similar Documents

Publication Publication Date Title
BRPI0418534A (pt) processo e aparelho para recuperação de portadora em um sistema de comunicações
BRPI0410373A (pt) codificação por repetição em um sistema de comunicação baseado em satélite
WO2009013206A3 (en) Wireless access system and transmission method
BRPI0410013A (pt) método e aparelho para sincronizar um sinal de modulação com múltiplos nìveis
WO2009017363A3 (en) Method and apparatus for transmitting and receiving different signal types in communication systems
WO2008152766A1 (ja) 無線通信装置、無線通信システム及び無線通信方法
BRPI0417253A (pt) sistemas e métodos para alocação adaptativa de recursos e entre um sinal de referência dedicado e um sinal de tráfego
BRPI0407628A (pt) codificação de superposição controlada em sistemas de comunicação multi-usuário
WO2005025074A3 (en) Polarization state techniques for wireless communication
WO2006107381A3 (en) Radioterminals and associated operating methods that alternate transmission of wireless communications and processing of global positioning system signals
UA86927C2 (ru) Способ и устройство для обработки данных для передачи в системе беспроводной связи (варианты), передатчик в системе беспроводной связи и устройство беспроводной связи
WO2008014473A3 (en) Method and apparatus for sending signaling for data transmission in a wireless communication system
BRPI0507557A (pt) método, dispositivo receptor, aplicativo de software executável em um dispositivo receptor, dispositivo transmissor, e aplicativo de software executável em um dispositivo transmissor para entrega de arquivos em um sistema capaz de transmissão de um para muitos, e, sistema capaz de transmissão de um para muitos
WO2008120544A1 (ja) 基地局装置、移動局及び無線通信システム並びに通信制御方法
BRPI0606203A2 (pt) diversidade de padrões para suportar um sistema de comunicações mimo e métodos associados
ATE473560T1 (de) Verfahren zum erhöhen der leistung zweitrangiger daten in einem hierarchischen modulationsverfahren
EP1760977A4 (en) RADIO ENDING, RECEIVING, SENDING AND RECEIVING METHOD
DE50002503D1 (de) Funkstrecke mit Sender und Empfänger sowie Verfahren zu deren Betrieb
BR0213485A (pt) Método e sistema para identificar tráfego de repetidora em um sistema de múltiplo acesso por divisão de código
RU2008149690A (ru) Устройство стопорения подвижного элемента летательного аппарата
EP1793517A4 (en) DATA COMMUNICATION SYSTEM, RECEIVER DEVICE AND TRANSMITTER
TW200633415A (en) Wireless communication system, receiver, demodulation method used for the system and receiver, and program thereof
ATE323352T1 (de) Verfahren und funkstation zur übertragung von datenpaketen in einem funk-kommunikationssystem
DE60211673D1 (de) Verfahren und vorrichtung zur galvanisch getrennten übertragung von gigabitdaten mit einem schleifringübertrager
WO2009137247A3 (en) System and method for providing end-to-end content security

Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]
B25G Requested change of headquarter approved
B25A Requested transfer of rights approved
B25A Requested transfer of rights approved
B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 22A ANUIDADE.